Re. Dioudonne's "anti-Zionism"? Well, his appalling Shoah-themed "song", him describing the Holocaust as "memorial pornography", and him making "gas chamber" comments towards a (Jewish) opponent of his certainly count as "three strikes and you're out" for me as far as he's concerned, and that's just for starters.
I agree that he's anti-semitic. But anti-semitism is quite compatible with anti-Zionism.
And for his "anti-establishment" stuff? Well, hanging around with the "respectable" (ha fucking ha) Front National, and the fact his "career" has made him a wealthy and (God knows why) popular figure, certainly has little (if anything) to with any genuine anti-establishment stuff for me. He may wish he was "anti-establishment", but his views and actions are as tiresomely predictable as they are abhorrent.
You reckon? I certainly wouldn't have predicted them. They surprised the hell out of me tbh. And the French establishment do seem to see him as an enemy. Why wouldn't they?